Hi all,
 
I need to krige data that is irregularly spaced within irregularly
shaped areas (agricultural fields).   
 
At present, I am creating a regular grid for newdata in
krige(data,newdata....) by
 
x.range <- as.integer(range(a2@coords[,1]))
y.range <- as.integer(range(a2@coords[,2]))
grd <- expand.grid(x=seq(from=x.range[1], to=x.range[2], by=10),
y=seq(from=y.range[1], to=y.range[2], by=10) )

I have not been able to find a method to trim the newdata grid to the
same shape as the original data - is this possible?
 
The task I am trying to achieve is the same as creating meuse.grid from
meuse data.
 
Can anyone help?
 
Regards,
 
Craig.
 


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